package com.ump.core.common.aspect;

import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.ump.commons.web.ResultRsp;
import com.ump.core.common.aspect.annotation.Dict;


/**
 * 字典aop类
 * 
 * @author fangyh
 * @version 1.0
 * @since 1.0
 */
@Aspect
@Component
public class DictAspect {
	private static final Logger logger = LoggerFactory.getLogger(DictAspect.class);
//	@Autowired
//	private ISysDictService dictService;

	// 定义切点Pointcut
	@Pointcut("execution(public * com.ump.*.*.*Ctrler.*(..))")
	public void excudeService() {
	}

	@Around("excudeService()")
	public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
		long time1 = System.currentTimeMillis();
		Object result = pjp.proceed();
		long time2 = System.currentTimeMillis();
		logger.debug("获取JSON数据 耗时：" + (time2 - time1) + "ms");
		long start = System.currentTimeMillis();
		parseDictText(result);
		long end = System.currentTimeMillis();
		logger.debug("解析注入JSON数据  耗时" + (end - start) + "ms");
		return result;
	}

	/**
	 * 本方法针对返回对象为Result 的IPage的分页列表数据进行动态字典注入 字典注入实现 通过对实体类添加注解@dict
	 * 来标识需要的字典内容,字典分为单字典code即可 ，table字典 code table text配合使用与原来jeecg的用法相同 示例为SysUser
	 * 字段为sex 添加了注解@Dict(dicCode = "sex") 会在字典服务立马查出来对应的text
	 * 然后在请求list的时候将这个字典text，已字段名称加_dictText形式返回到前端 例输入当前返回值的就会多出一个sex_dictText字段 {
	 * sex:1, sex_dictText:"男" } 前端直接取值sext_dictText在table里面无需再进行前端的字典转换了
	 * customRender:function (text) { if(text==1){ return "男"; }else if(text==2){
	 * return "女"; }else{ return text; } } 目前vue是这么进行字典渲染到table上的多了就很麻烦了
	 * 这个直接在服务端渲染完成前端可以直接用
	 * 
	 * @param result
	 */
	@SuppressWarnings("unchecked")
	private void parseDictText(Object result) {
		if (result instanceof ResultRsp<?>) {
			if (((ResultRsp<?>) result).getRspObj() instanceof IPage) {
				List<JSONObject> items = new ArrayList<>();
				for (Object record : ((IPage<?>) ((ResultRsp<?>) result).getRspObj()).getRecords()) {
					ObjectMapper mapper = new ObjectMapper();
					String json = "{}";
					try {
						// 解决@JsonFormat注解解析不了的问题详见SysAnnouncement类的@JsonFormat
						json = mapper.writeValueAsString(record);
					} catch (JsonProcessingException e) {
						logger.error("json解析失败" + e.getMessage());
						e.printStackTrace();
					}
					JSONObject item = JSONObject.parseObject(json);
					for (Field field : record.getClass().getDeclaredFields()) {
						if (field.getAnnotation(Dict.class) != null) {
							//String code = field.getAnnotation(Dict.class).dicCode();
							//String text = field.getAnnotation(Dict.class).dicText();
							String table = field.getAnnotation(Dict.class).dictTable();
							//String key = String.valueOf(item.get(field.getName()));
							String textValue = null;
							if (!StringUtils.isEmpty(table)) {
								//textValue = dictService.queryTableDictTextByKey(table, text, code, key);
							} else {
								//textValue = dictService.queryDictTextByKey(code, key);
							}
							item.put(field.getName() + "_dictText", textValue);
						}
						// date类型默认转换string格式化日期
						if (field.getType().getName().equals("java.util.Date")
								&& field.getAnnotation(JsonFormat.class) == null && item.get(field.getName()) != null) {
							SimpleDateFormat aDate = new SimpleDateFormat("yyyy-mm-dd HH:mm:ss");
							item.put(field.getName(), aDate.format(new Date((Long) item.get(field.getName()))));
						}
					}
					items.add(item);
				}
				((IPage<JSONObject>) ((ResultRsp<?>) result).getRspObj()).setRecords(items);
			}

		}
	}

}
